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Spray Gun Troubleshooting

It is quite common for many spray gun related problems to be a result of improper cleaning, or a lack of cleaning and/or incorrect spray gun storage techniques. A malfunctioning air compressor or air compressor which does not have adequate output can cause spray painting problems.

Other common spray gun issues will be a result of wear, abrasion or physical damage caused from events such as dropping the spray gun.

Different issues will affect different types of spray guns. Common faults with air spray guns are usually paint buildup around the air cap, worn or damaged seals and worn or damaged parts.

Airless paint spray systems are commonly affected by incorrect storage techniques which allows paint to dry causing valves to stick or even corrosion to the internal components of an airless spray pump caused by leaving water in the airless without airless spray pump saver or other non corrosive solution.

Airless spray unit component wear can be a common issue due to the sheer volume of paint many airless spray pumps spray. Damaged faulty or incorrect paint filtration can be the source of many other common airless paint spraying problems.

HVLP turbine paint spray systems commonly have issues with the nonreturn valve to the paint suction pot malfunctioning and another common issue with high-volume low-pressure turbine spray units is paint over spray blocking the HVLP turbine air intake filters.

Electrostatic paint spray systems require careful set up to ensure paints being sprayed are within an acceptable resistivity range. Electrostatic paint spray gun systems must be properly grounded including correct grounding or earth isolation as required by specific electrostatic paint spray systems.

Using the correct type of spray painting equipment for the actual paint to be sprayed and suited to the area and surfaces to be sprayed is also an important consideration. More than one type of equipment may be satisfactory while certain types of spray painted equipment may not be at all suitable for certain paints or certain areas.

Two pack paints must always be mixed in the correct ratios, care must be taken to ensure all two pack paint that has been mixed and catalysed is sprayed within the working pot life of the two-part paint as specified by the manufacturer. New batches of catalysed two pack paint should not be mixed with previously catalysed batches as this can cause acceleration in curing and affect spray paint quality.

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